Let's divide 81305087 by 36
The aim is to understand the frequency of 36 in 81305087.

Let's proceed to step 1:
8 divided by 36 is 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Append the next digit (1) from the dividend to 8 and continue with: 81 / 36

Let's proceed to step 2:
36 goes into 81 2 times with a remainder of 9.
Write down 2 as next digit of the result. 
Result so far: 2.0
Deduct 72 from 81 and we're left with 9.
Append the next digit (3) from the dividend to 9 and continue with: 93 / 36

Moving on to step 3:
If we divide 93 by 36, we get 2 and a remainder of 21.
Write down 2 as next digit of the result. 
Result so far: 22.0
If we subtract 72 from 93, we get 21.
Grab the next digit (0) from the dividend, add it to 21, then carry on: 210 / 36

Let's proceed to step 4:
If we divide 210 by 36, we get 5 and a remainder of 30.
Record the quotient 5 as the next digit in the result. 
Result so far: 225.0
Subtract 180 from 210 to get 30.
Grab the next digit (5) from the dividend, add it to 30, then carry on: 305 / 36

On to step 5:
36 can be fit into 305 8 times, resulting in a remainder of 17.
The number 8 becomes the next digit in our result. 
Result so far: 2258.0
Deduct 288 from 305 and we're left with 17.
Take the next digit (0) from the dividend and append it to 17, then repeat: 170 / 36

On to step 6:
170 divided by 36 is 4 with a remainder of 26.
The next digit of our result is 4. 
Result so far: 22584.0
If we subtract 144 from 170, we get 26.
Take the next digit (8) from the dividend and append it to 26, then repeat: 268 / 36

Step 7:
36 goes into 268 7 times with a remainder of 16.
Use 7 as the next digit of our solution. 
Result so far: 225847.0
Deduct 252 from 268 and we're left with 16.
Bring next digit (7) of the dividend behind the 16 and repeat the process: 167 / 36

Let's proceed to step 8:
167 divided by 36 is 4 with a remainder of 23.
Use 4 as the next digit of our solution. 
Result so far: 2258474.0
Subtracting 144 from 167 leaves us with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Going ahead to step 9:
If we divide 230 by 36, we get 6 and a remainder of 14.
The number 6 becomes the next digit in our result. 
Result so far: 2258474.6
If we take 216 away from 230, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

On to step 10:
When dividing 140 by 36, we get 3 with a remainder of 32.
Record the quotient 3 as the next digit in the result. 
Result so far: 2258474.63
Deduct 108 from 140 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 11:
320 divided by 36 is 8 with a remainder of 32.
Write down 8 as next digit of the result. 
Result so far: 2258474.638
Deduct 288 from 320 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Advancing to step 12:
If we divide 320 by 36, we get 8 and a remainder of 32.
Put 8 as the next digit of the answer. 
Result so far: 2258474.6388
Deduct 288 from 320 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

After the division, we end up with 2258474.6388 and a remainder of 0.00032.